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| Accutek Microcircuit Corporation DESCRIPTION The Accutek AK594096 high density memory module is a CMOS random access memory organized in 4 Meg x 9 bit words. The assembly consists of two 4 Meg x 4 and one 4 Meg x 1 DRAMs, mounted on the front side of a printed circuit board in 30 pad SIM ( l eadl e s s ) o r 3 0 p i n S I P ( l e a d e d ) co n f i g u r a t i o n w i t h JEDEC-standard pinouts. Designed especially for low-height applications such as VMEbus boards, this low profile module is 0.550 inch high. The operation is identical to nine 4 Meg x 1 DRAMs. For the lower eight bits, data input is tied to data output and brought out separately for each bit, with common RAS and CAS control. This common I/O feature dictates the use of early-write cycles to prevent contention of data In and data out. Since the Write-Enable (WE)i signal must always go low before CAS in a write cycle, Read-Write and Read-Modify-Write operation is not possible. For the ninth bit, data in (D9) and data out (Q9) pins are brought our separately and controlled by a separate PCAS for that bit. AK594096BS / AK594096BG 4,194,304 Word by 9 Bit CMOS Dynamic Random Access Memory Front View 30-Pin SIM + + 30-Pin SIP + + 1 FEATURES * 4,194,304 x 9 bit organization * Low Profile 30 pad (SIM) Single In-Line Memory * Low Profile 30 pin (SIP) Single In-Line package * JEDEC standard pinout * Common CAS, RAS and WE for the lower eight bits * CAS-before-RAS refresh * Refresh cycle 2048 cycles in 32 mSEC * Power 1.450 Watt Max Active, 70 nSEC 1.610 Watt Max Active, 60 nSEC 16.5 mWatt Max Standy * Operating free air temperature 00C to 700C * Downward compatible with AK591024 and AK59256 * Upward compatible with AK5916384 * Fast Page Mode and Static Column Mode versions available, nibble mode is not possible PIN NOMENCLATURE A0 - A10 RAS0 CAS WE OE DQ1 - DQ8 D9 Q9 Vcc Vss NC Address Inputs PIN ASSIGNMENT 1 Vcc CAS DQ1 A0 A1 DQ2 A2 A3 Vss DQ3 A4 A5 DQ4 A6 A7 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 DQ5 A8 A9 A10 DQ6 WE Vss DQ7 NC DQ8 NC RAS0 NC NC Vcc FUNCTIONAL DIAGRAM A0 - A10 + RAS + CAS + WE + DQ1 + DQ2 + DQ3 + DQ4 + 11 A0 - A10 * RAS * CAS * WE * DQ1 * DQ2 * DQ3 * DQ4 Row Address Strobe Column Address Strobe Write Enable Output Enable Data In/Data Out Data In Data Out 5v Supply Ground No Connect 2 3 4 5 6 7 8 9 10 11 12 13 14 15 OE * DQ5 DQ6 DQ7 DQ8 + + + + A0 - A9 * RAS * CAS * WE * DQ1 * DQ2 * DQ3 * DQ4 OE * MODULE OPTIONS Leadless SIM: AK594096BS Leaded SIP: AK594096BG PCAS + A0 - A11 * RAS * CAS * WE D9 + Q9 + *D Q* ORDERING INFORMATION PART NUMBER CODING INTERPRETATION Position 1 Product AK = Accutek Memory 2 Type 4 = Dynamic RAM 5 = CMOS Dynamic RAM 6 = Static RAM Organization/Word Width 1 = by 1 16 = by 16 4 = by 4 32 = by 32 8 = by 8 36 = by 36 9 = by 9 Size/Bits Depth 64 = 64K 256 = 256K 1024 = 1 MEG Package Type 4096 = 8192 = 16384 = 4 MEG 8 MEG 16 MEG 12345678 EXAMPLES: AK594096BGP-70 4 Meg x 9, CMOS Dynamic RAM, Leaded SIP, Page Mode, Commercial, 70 nSEC Access Time AK594096BSP-60 4 Meg x 9, CMOS Dynamic RAM, Leadless SIM, Page Mode, Commercial, 60 nSEC Access Time MECHANICAL DIMENSIONS Inches 3 4 5 6 G = Single In-Line Package (SIP) S = Single In-Line Module (SIM) D = Dual In-Line Package (DIP) W = .050 inch Pitch Edge Connect Z = Zig-Zag In-Line Package (ZIP) Special Designation P = Page Mode N = Nibble Mode K = Static Column Mode W = Write Per Bit Mode V = Video Ram Separator - = Commercial 00C to +700C M = Military Equivalent Screened (-550C to +1250C) I = Industrial Temperature Tested (-450C to +850C) X = Burned In Speed (first two significant digits) DRAMS SRAMS 50 = 50 nS 8= 8 nS 60 = 60 nS 10 = 10 nS 70 = 70 nS 12 = 12 nS 80 = 80 nS 15 = 15 nS .550" MAX .550" MAX 0.100" 0.100" CC LL + + CC LL 1 3.100" MAX 3.505" MAX 7 + + 8 0.200" MAX The numbers and coding on this page do not include all variations available but are show as examples of the most widely used variations. Contact Accutek if other information is required. ACCUTEK MICROCIRCUIT CORPORATION BUSINESS CENTER at NEWBURYPORT 2 NEW PASTURE ROAD, SUITE 1 NEWBURYPORT, MA 01950-4054 VOICE: 978-465-6200 FAX: 978-462-3396 Email: sales@accutekmicro.com Internet: www.accutekmicro.com Accutek reserves the right to make changes in specifications at any time and without notice. Accutek does not assume any responsibility for the use of any circuitry described; no circuit patent licenses are implied. Preliminary data sheets contain minimum and maximum limits based upon design objectives, which are subject to change upon full characterization over the specific operating conditions. |
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